I have been told that all Sturtevants in the US are descended from this Samuel Sturtevant.
This link is courtesy of James Clifton Mayfield, also a descendant of Samuel. Jim does not know me
and we have never met, but we are related. I found this link through the magic of the
Web.

My paternal grandfather was a geneticist. In the early part of the last century, he was
the first to map the linear arrangement of genes along the chromosomes. He was an undergraduate
(sophomore) at the time. Here's his original paper.